Lätt ansträngning ökar det anabola gensvaret på proteinintag

[King Grub]

BACKGROUND & AIMS:

Hyperaminoacidemia stimulates myofibrillar fractional synthesis rate (myoFSR) transiently in resting skeletal muscle. We investigated whether light-load resistance exercise can extent this responsiveness.

METHODS:

Ten healthy males exercised one leg with a light-load resistance-like exercise at 16% of 1 repetition maximum and received oral protein boluses every hour for a 10-h period. Their myoFSR was determined by [1-(13)C]-leucine incorporation. Muscle biopsies were obtained from the resting (REST) and exercised (EXC) muscles every 2.5-h in the protein-fed period.

RESULTS:

Protein feeding significantly elevated plasma leucine and essential amino acids by an average of 39 ± 9% (mean ± SEM) and 20 ± 4%, respectively, compared to the basal concentrations: 197 ± 12 μmol L(-1) and 854 ± 35 μmol L(-1), respectively. The myoFSR was similar in EXC and REST muscles in the first 8 h (all time intervals p > 0.05). After 8 h the myoFSR dropped in the REST muscle to 0.041 ± 0.005%·h(-1), which was 65 ± 5% of the rate in EXC leg at the same time point (0.062 ± 0.004%·h(-1)) and 80 ± 14% of the level in REST leg from 0.5 to 8 h (0.056 ± 0.005%·h(-1)) (interaction p < 0.05).

CONCLUSIONS:

Compared to rest, light-load exercise prolonged the stimulatory effect of dietary protein on muscle biosynthesis providing perspectives for a muscle restorative effect in clinical settings where strenuous activity is intolerable.

Clin Nutr. 2012 Aug 3. The anabolic potential of dietary protein intake on skeletal muscle is prolonged by prior light-load exercise.

[Silencer]

Är det här så bra som det låter? Att måttlig fysisk aktivitet kan bidra till ökad muskeltillväxt?

[King Grub]

Det är mycket möjligt, om dina muskler är förtvinade i "settings where strenuous activity is intolerable".

[Fartman]

Ursprungligen postat av Silencer

Är det här så bra som det låter? Att måttlig fysisk aktivitet kan bidra till ökad muskeltillväxt?

Det känns väl iofs självklart att lätt träning ger mer än ingen träning?

[tjing]

Ursprungligen postat av king grub

det är mycket möjligt, om dina muskler är förtvinade i "settings where strenuous activity is intolerable".

+1